Sliding Door Side Sill Shielding Cover Mechanism
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Solution Overview
Problem
Sliding door vehicles face challenges in preventing foreign substances from entering the internal side sill space due to the design of existing structures, which are not applicable to sliding doors and fail to maintain closure effectively.
Innovation Solution
A structure featuring a lower rail, a drive unit, and a shield means with a cover unit and guide rail units that guide the cover unit to close the internal side sill space, utilizing a bellows-shaped cover unit that moves along the guide rail units to prevent foreign substances from entering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sliding door structure is used with traditional side sill design, then the door can be opened and closed smoothly, but foreign substances can enter the internal side sill space
Solution Approach 1:
The cover unit is designed with a bellows-shaped flexible structure that can expand and contract to cover the internal side sill space. This flexible membrane approach allows the cover to adapt to the changing geometry of the open/closed door positions while maintaining continuous coverage to prevent foreign substance entry.
Solution Approach 2:
The shield means is designed as a dynamic system where the cover unit moves along with the door opening/closing motion. The cover unit is guided by guide rail units and connected to the drive unit, allowing it to dynamically adjust its position to maintain coverage of the internal side sill space throughout the door's range of motion.
2Object-affected harmful factors
If the internal side sill space is kept closed to prevent foreign substances, then protection is improved, but the door cannot be opened
Solution Approach 1:
The shield means transitions from a static barrier to a dynamic covering system. The cover unit moves in coordination with the door's opening/closing motion, maintaining coverage of the internal side sill space while allowing the door to fully open and close without obstruction.
Solution Approach 2:
The cover unit is designed to nest within or alongside the door structure, allowing it to deploy over the internal side sill space when needed while retracting or moving away when the door requires full opening. This nested arrangement allows both functions to coexist without conflict.
3Object-affected harmful factors
If a dust inflow prevention member is fastened to the door lower end, then foreign substance prevention is improved for swing doors, but the structure cannot be applied to sliding doors
Solution Approach 1:
The shield means with the cover unit serves multiple functions: it prevents foreign substance entry like a dust seal, guides the door movement through integrated guide rail units, and connects to the drive unit for coordinated operation. This multi-functional design makes it adaptable to sliding door mechanisms while achieving the protective function.
Solution Approach 2:
The cover unit acts as an intermediary element between the door and the internal side sill space. Rather than attaching directly to the door like traditional dust seals, it mediates the interaction by moving along guide rails and covering the space when needed, making the solution compatible with sliding door mechanics.
Data Source
AI summary
A structure for shielding a side sill for a sliding door vehicle includes a lower rail mounted in an internal side sill space, a drive unit movably connected to the lower rail, and a shield structure including a cover unit having one end connected to the drive unit and guide rail units configured to guide the cover unit, wherein the cover unit covers the internal side sill space exposed in accordance with a movement of the drive unit.